Emergence of extended-spectrum β-lactamase (ESBL) and/or carbapenemase producing Enterobacteriaceae (CPE) and their antimicrobial resistance

Bratislava Medical Journal

article

J. Koren¹  Z. Hubenakova¹  H. Drahovska²  E. Ozaee²  B. Markuskova²  A. Lichvarikova² 

[1] Institute of Microbiology, Faculty of Medicine, Comenius University and University Hospital Bratislava;Department of Molecular Biology, Faculty of Natural Sciences, Comenius University Bratislava

关键词: ESBL;    Escherichia coli;    ST131;    multidrug-resistance;    carbapenemase producing Enterobacteriaceae;   

DOI  :  10.4149/BLL_2019_157

学科分类：医学（综合）

来源: AEPress, s.r.o.

【 摘 要 】

OBJECTIVES: We focused on detecting the most frequent resistance mechanisms in selected multidrug-resistant (MDR) strains and determining their antimicrobial resistance. BACKGROUND: MDR pathogens pose urgent public health threat due to limited treatment options, rigorous control measures and significant mortality. METHODS: We confirmed extended-spectrum β-lactamase (ESBL) and carbapenemase producing Enterobacteriaceae through guidelines, as well following β-lactamases: AmpC by cloxacillin, class A carbapenemase with phenylboronic acid, class B metallo-β-lactamase with ethylenediaminetetraacetic acid. Multilocus sequence typing was used to investigate 20 Escherichia coli strains. RESULTS: Overall 205 mostly ESBL Escherichia coli demonstrated resistance against amikacin (4.7 %), tigecycline (1.2 %), and no resistance to ceftazidime/avibactam, meropenem, nitrofurantoin and fosfomycin. Out of 41 Klebsiella species (spp.), 37 (90.2 %) showed carbapenemase activity, 13 (35.1 %) of class A and 24 (64.9 %) of class B. Resistance was following: meropenem 66.7 %, tigecyclin 10.2 % and colistin 0 %. From Enterobacter spp. 21 strains, 14 (66.7 %) were ESBL, 5 produced ESBL and/or AmpC and 2 were MDR. We ascertained 14 (70 %) E. coli sequence type – ST131. CONCLUSIONS: The study revealed various resistance mechanisms in concert with different agents and association of specific ST131 within E. coli. These characteristics considerably contribute to emergence of antimicrobial resistance (Tab. 4, Ref. 30).

【 授权许可】

CC BY